Floors

1F: Receptionistic Counter

The first floor contains an Item Buyer, who will buy many items from the player. Most specifically, he will rebuy Pokéballs and Potions for 1/8 of their regular price, and regular berries for 20, as noted by the table below.

2F: Trainer Supplements

The merchant of this floor sells all items that are regularly found in Pokémarts. Normally, Pokémarts are limited by a maximum amount of 10 items, however they have gathered every item here by separating them into multiple categories.

Miscellaneous

PvE Coin Master

The PvE Coin Master is located on the 2nd floor. He will sell various rare Pokemon and items using PvE Coins as a currency. He will sell up to 5 different kind of Pokemon, which are randomized each week from a list of Pokemon. The items he sell varie from a large variety of categories, including Cosmetics, Mounts, Evolution items, Battle items and Usable items.

3F: TMs

TMs are sold on this floor, making it the largest TM store available in the region.

4F: Evolutionary Stones

There is a stack of cardboard boxes that can be used for Rotom forms on the 4th floor. If the player has a Rotom in his or her party, it will be able to freely change between the multiple forms with no cost or delay.

Rooftop

Rachel's Friends Quest (Michelle)

One of the locations the ninth and final friend of Rachel can be found in is on the rooftop of Lilycove Department Store. She will trade the player's Pokeball for a level 20 Tropius, putting an end to the quest.